Not seen anything in Release Note's Nv put up for Drivers ever .. but if you have 9 series card i am sure this problem will go .. i think the 8 series cards for PhysX are software and 9 series onwards are Hardware .

8 series do hardware PhysX as well. i had 8800GTS (G80) 640mb's in SLi. Any series before 8 can't do PhysX. thing was i didnt have to worry because my 8800's wheren't designed to drop clocks in 2D. we havent seen cards do that since the 6 series i think, i might be wrong though. i'm pretty sure my 7800GT's didnt drop to 2D mode?

8 series do hardware PhysX as well. i had 8800GTS (G80) 640mb's in SLi. Any series before 8 can't do PhysX. thing was i didnt have to worry because my 8800's wheren't designed to drop clocks in 2D. we havent seen cards do that since the 6 series i think, i might be wrong though. i'm pretty sure my 7800GT's didnt drop to 2D mode?

8 series PhysX have a look on net even Nvidia site i am 50/50 on hardware/software, it is only explanation and i bet Nvidia no this is happening, never had 6 series but i did 7 series they never dropped clocks .